Pull-socket.



H. HUBBELL.

PULL SOCKET. APrLIoA'TIoN FILED MAY s. 1912.

Patentd June 17, 1913.

A TTHIVEY UNITED STATES HARVEY HU'BBELL, OF RIDGEPORT, CONNECTICUT.

PULL-SOCKET.

Specicaton of Letters Patent..

Patented June 17,193.'

Application filed May 6, 1912. Serial No. 695,474.

To all whom t may concern lBe it known that l. l'lARvEY Honneur, a citizen oi' the United Sta-tes, residing at Bridgeport, countyl of Fa-irtield, State of Connecticut, have invented an Improvement in Pull-Sockets, of which the following is a specification.

This invention relates to` pull sockets for incandescent electric lamps which comprise an arrangement of the switch mechanism with relation to the insulating blocks.. the

current carrying brackets and the operating mechanism that will permit the use of a relatively small shell, with switch mechanism having ample current carrying capacity and arranged to operate in the horizontal plane and a direct acting relatively long operating bar between the operating mechanism and the switch mechanism, thus rendering the use of a chain within the shell unnecessary and avoiding the most frequent cause of trouble in pull sockets as ordinarily constructed.

It is essential in the present structure that the operating bar shall have relatively little swing and that its operation shall be a direct pull and practically tangential to the arc of movement of the pivotal point of the `operating bar to the operating member ot the switch and with these requirements in view the important feature of the present invention is to provide a special form of operating bar which may be readily connected to or disconnected from the operating mechanism'so as to permit reversal of the socket or renewals, repairs, or other changes Without interfering in any way v with the cap, shell r mechanism Within the shell, and which Will effectually insulate the switch mechanism from the operating mechanism independently'of any special construction or arrangement of either the switch mechanism or the operating mechanism.

Vith these and other objects in view, I have devised the novel insulating operating bar for pull sockets, which l will now describe referring to the accompanying drawing forming a part of this specification and using reference characters to indicate the several parts.

Figure l is an elevation of a pull socket partly broken away to show the arrangement of the switch mechanism with relation to the operating mechanism; Fig. 2, a plan view of the switch operating member l and my novel operating bar detached; Fig. 8, an edge view corresponding therewith partly in section on Athe line indica-ted by 3 in Fig. 2, looking in the direction of the arrow; Fig. t, an inverted plan view of the operating bar; Fig. 5, an edge view partly in section illustrating a variant form ofthe invention; and Fig. 6 is an inverted plan view corresponding with Fig.

10 denotes the socket shell, I1l the cap, l2 the insulating lining, 1 3 the screw shell. llt and the insulating blocks, 16 one of the current carrying brackets by which the insulating blocks are connected, 17 the switch mechanism, 18 an operating member therefor, 19 the operating lever to which a pendant 20 is connected, 21 a hub carried by a bracket 22 which is rigidly secured to the insulating blocks and 23 a bracket to which the operating' lever is pivoted and which is detachably secured to the hub.

It' is not considered necessary for the purpose of this Vspeciiication to describe the above parts more in detail as specilically they form no portioii of the present invention and the novel parts, `improvements and combinations are described and claimed in other applications in Letters Patent.

My novel insulating bar consists essentially of two parts indicated respectively by 24 and 25 which are eifectually insulated from each other, as in 26. Part 24. is prvided at its inner end with a slot 27 which is adapted to be engaged by a T-shaped lug 28. upon switch operating member/18. The slot. and the head of the lug normally lie obliquely to each other, as clearly-shown in Fig. 2, so that the bar may be readily connected to the operating member bv swinging the bar laterally until the slot and the head of the lug are in alinement and then passing one end ofthe lug through the slot and dropping the bar down .to place with the neck of the stud in the slot. When once attached the bar cannot be detached without again swinging it laterally to place the lug and slot in alinement which can only be done when the bar is detached from the operating lever. The outer end of part is detachably connected to the operating lever' in any convenient manner. present instance I have shown part 25 as provided with a slot 29 which as adapted to receive a hook 30 on the operating lever. At the inner end of part 25 is a slot 31 In the nwhich receives :L plate of insulating mitterial and on opposite sides of sid part are placed other plates of insulating materiel f ment, as at 33, with a plate 34 which isconnected to part 24: but insulated therefrom in the same manner that the parts of the bar are connected and insulated in the other form.

Having thus described my invention, l Claim:

l. ln t pull socket, the combination With a switch operating member having a T- shaped lug, of an insulating operating bar having n. slot normally lying obliquely to said lug whereby the parts are detachably Connected and an operating lever to which noefrsafi the other end of the lber is detachably connected.

2. ln a pull socket, the combination with a switch operating member and a switch operating lever, of a two-part operating bar, one of said parts having a slot, insulation in said slot and on opposite sides of the part and lugs passing through the insulation by which the parts are secured together.

3. An operating bar scribed comprising two members, one of which is provided Witha slot, insulation in said slot and on oppositesides of said mem-- ber, vand lugs integral with the other meniber and passing through the insulation by which the parts are rigidly secured together. In testimony whereof I aix my signature in presence of t-Wo Witnesses.

HARVEY HBBELI).

Witnesses S. W. ATHERTON, H. W. MEADE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, n. C.

of the character de- 

